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Sewage treatment plant, major discharger, Richmond, California. NPDES permit CA0038539, in force until Jul 31, 2029. Last 12 months: no values over a limit, 12 of 29 reports late. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | monthly average | ≤ 57 mg/L | all year | EF01 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 65 mg/L | all year | EF01 |
| Nitrogen, ammonia total [as N] | monthly average | report only (kg/d) | all year | EF01 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (kg/d) | all year | EF01 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | all year | EF01 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | EF01 |
| Nitrite + Nitrate total [as N] | monthly average | report only (kg/d) | all year | EF01 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (kg/d) | all year | EF01 |
| Nitrogen, inorganic total | monthly average | report only (mg/L) | all year | EF01 |
| Nitrogen, inorganic total | daily maximum | report only (mg/L) | all year | EF01 |
| Nitrogen, inorganic total | monthly average | report only (kg/d) | all year | EF01 |
| Nitrogen, inorganic total | daily maximum | report only (kg/d) | all year | EF01 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | EF01 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | EF01 |
| Phosphorus, total [as P] | monthly average | report only (kg/d) | all year | EF01 |
| Phosphorus, total [as P] | daily maximum | report only (kg/d) | all year | EF01 |
| Cyanide, total [as CN] | monthly average | ≤ 19 ug/L | all year | EF01 |
| Cyanide, total [as CN] | daily maximum | ≤ 40 ug/L | all year | EF01 |
| Selenium, total recoverable | daily maximum | report only (ug/L) | all year | EF01 |
| Zinc, total recoverable | monthly average | ≤ 460 ug/L | all year | EF01 |
| Zinc, total recoverable | daily maximum | ≤ 910 ug/L | all year | EF01 |
| Copper, total recoverable | monthly average | ≤ 32 ug/L | all year | EF01 |
| Copper, total recoverable | daily maximum | ≤ 76 ug/L | all year | EF01 |
| Flow, in conduit or thru treatment plant | daily average | report only (MGD) | all year | EF01 |
| Chlorine, total residual | 1-hour average | ≤ 1.8 mg/L | all year | EF01 |
| Flow, total | monthly total | report only (Mgal) | all year | EF01 |
| Polychlorinated biphenyls [PCBs], sum of congeners | monthly average | report only (ug/L) | all year | EF01 |
| Polychlorinated biphenyls [PCBs], sum of congeners | daily maximum | report only (ug/L) | all year | EF01 |
| Polychlorinated biphenyls [PCBs], sum of Aroclors | monthly average | ≤ .012 ug/L | all year | EF01 |
| Polychlorinated biphenyls [PCBs], sum of Aroclors | daily maximum | ≤ .017 ug/L | all year | EF01 |
| Mercury, total recoverable | monthly average | ≤ .066 ug/L | all year | EF01 |
| Mercury, total recoverable | weekly average | ≤ .072 ug/L | all year | EF01 |
| Chromium, hexavalent tot recoverable | monthly average | ≤ 41 ug/L | all year | EF01 |
| Chromium, hexavalent tot recoverable | daily maximum | ≤ 120 ug/L | all year | EF01 |
| Chronic Mthd, Survival Endpt %Effect, Growth Endpt Median TSTcHo R/nR Pass/Fail, StatR7d A bahia | daily maximum | ≤ 0 pass=0;fail=1 | all year | EF01 |
| Chronic Mthd, Survival Endpt %Effect, Growth Endpt Median TSTcHo R/nR Pass/Fail, StatR7d A bahia | monthly median | ≤ 0 pass=0;fail=1 | all year | EF01 |
| Chronic Mthd, Survival Endpt %Effect, Growth Endpt Median TSTcHo R/nR Pass/Fail, StatR7d A bahia | daily maximum | ≤ 50 % effect | all year | EF01 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | all year | EF02 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 45 mg/L | all year | EF02 |
| pH | instantaneous minimum | ≥ 6 SU | all year | EF02 |
| pH | instantaneous maximum | ≤ 9 SU | all year | EF02 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | EF02 |
| Solids, total suspended | weekly average | ≤ 45 mg/L | all year | EF02 |
| Flow, in conduit or thru treatment plant | daily average | report only (MGD) | all year | EF02 |
| Flow, total | monthly total | report only (Mgal) | all year | EF02 |
| Enterococci | geometric mean | ≤ 290 CFU/100mL | all year | EF02 |
| Enterococci | 90th percentile | ≤ 1100 CFU/100mL | all year | EF02 |
| BOD, 5-day, percent removal | monthly average minimum | ≥ 85 % | all year | EF02 |
| Solids, suspended percent removal | monthly average minimum | ≥ 85 % | all year | EF02 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | all year | EF03 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 45 mg/L | all year | EF03 |
| pH | instantaneous minimum | ≥ 6 SU | all year | EF03 |
| pH | instantaneous maximum | ≤ 9 SU | all year | EF03 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | EF03 |
| Solids, total suspended | weekly average | ≤ 45 mg/L | all year | EF03 |
| Flow, in conduit or thru treatment plant | daily average | report only (MGD) | all year | EF03 |
| Flow, total | monthly total | report only (Mgal) | all year | EF03 |
| Enterococci | geometric mean | ≤ 290 CFU/100mL | all year | EF03 |
| Enterococci | 90th percentile | ≤ 1100 CFU/100mL | all year | EF03 |
| BOD, 5-day, percent removal | monthly average minimum | ≥ 85 % | all year | EF03 |
| Solids, suspended percent removal | monthly average minimum | ≥ 85 % | all year | EF03 |
| Cyanide, total [as CN] | monthly average | ≤ 19 ug/L | all year | EF1B |
| Cyanide, total [as CN] | daily maximum | ≤ 40 ug/L | all year | EF1B |
| Zinc, total recoverable | monthly average | ≤ 460 ug/L | all year | EF1B |
| Zinc, total recoverable | daily maximum | ≤ 910 ug/L | all year | EF1B |
| Copper, total recoverable | monthly average | ≤ 32 ug/L | all year | EF1B |
| Copper, total recoverable | daily maximum | ≤ 76 ug/L | all year | EF1B |
| Flow, in conduit or thru treatment plant | daily average | report only (MGD) | all year | EF1B |
| Chlorine, total residual | 1-hour average | ≤ 1.8 mg/L | all year | EF1B |
| Flow, total | monthly total | report only (Mgal) | all year | EF1B |
| Chromium, hexavalent tot recoverable | monthly average | ≤ 41 ug/L | all year | EF1B |
| Chromium, hexavalent tot recoverable | daily maximum | ≤ 120 ug/L | all year | EF1B |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | all year | EF2B |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 45 mg/L | all year | EF2B |
| pH | instantaneous minimum | ≥ 6 SU | all year | EF2B |
| pH | instantaneous maximum | ≤ 9 SU | all year | EF2B |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | EF2B |
| Solids, total suspended | weekly average | ≤ 45 mg/L | all year | EF2B |
| Duration | total | report only (hr) | all year | EF2B |
| Flow, in conduit or thru treatment plant | daily average | report only (MGD) | all year | EF2B |
| Flow, total | monthly total | report only (Mgal) | all year | EF2B |
| Volume, total | total | report only (Mgal) | all year | EF2B |
| Enterococci | geometric mean | ≤ 290 CFU/100mL | all year | EF2B |
| Enterococci | 90th percentile | ≤ 1100 CFU/100mL | all year | EF2B |
| BOD, 5-day, percent removal | monthly average minimum | ≥ 85 % | all year | EF2B |
| Solids, suspended percent removal | monthly average minimum | ≥ 85 % | all year | EF2B |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | IN02 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | IN02 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | IN02 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | IN02 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | IN02 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | IN02 |
| Nitrogen, ammonia total [as N] | monthly average | report only (kg/d) | all year | IN02 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (kg/d) | all year | IN02 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | all year | IN02 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | IN02 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (kg/d) | all year | IN02 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (kg/d) | all year | IN02 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | all year | IN02 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | IN02 |
| Nitrite + Nitrate total [as N] | monthly average | report only (kg/d) | all year | IN02 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (kg/d) | all year | IN02 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | IN02 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | IN02 |
| Phosphorus, total [as P] | monthly average | report only (kg/d) | all year | IN02 |
| Phosphorus, total [as P] | daily maximum | report only (kg/d) | all year | IN02 |
| Cyanide, total [as CN] | daily maximum | report only (ug/L) | all year | IN02 |
| Flow, in conduit or thru treatment plant | daily average | report only (MGD) | all year | IN02 |
| Flow, total | monthly total | report only (Mgal) | all year | IN02 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | IN03 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | IN03 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | IN03 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | IN03 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | IN03 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | IN03 |
| Nitrogen, ammonia total [as N] | monthly average | report only (kg/d) | all year | IN03 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (kg/d) | all year | IN03 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | all year | IN03 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | IN03 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (kg/d) | all year | IN03 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (kg/d) | all year | IN03 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | all year | IN03 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | IN03 |
| Nitrite + Nitrate total [as N] | monthly average | report only (kg/d) | all year | IN03 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (kg/d) | all year | IN03 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | IN03 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | IN03 |
| Phosphorus, total [as P] | monthly average | report only (kg/d) | all year | IN03 |
| Phosphorus, total [as P] | daily maximum | report only (kg/d) | all year | IN03 |
| Cyanide, total [as CN] | daily maximum | report only (ug/L) | all year | IN03 |
| Flow, in conduit or thru treatment plant | daily average | report only (MGD) | all year | IN03 |
| Flow, total | monthly total | report only (Mgal) | all year | IN03 |
| Mercury, total recoverable | annual average | ≤ .23 kg/yr | all year | SUM |
Cited limits by parameter: California's rules and the federal ones.
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Your permit document is the final word. As JSON: /api/v1/permits/CA0038539 · MCP: https://passage-data.com/mcp